Measurement E213M1398

Experiment:	E1-6, 2025
Year:	2001	Measurement comment: The angle ψ is the angle between the plane defined by the three-momenta of the hadron (in parentheses) and the target proton, and the plane defined by the three-momenta of the other two final-state hadrons Experiment comment: Experiment year: 2001—2002
Spokespersons:	R.W. Gothe, A. Trivedi
Reaction:	ep → π⁺π⁻p
Polarization:	none
Quantity:	dσ/dψ(p)
Q²:	4.2 — 5.0 GeV²
W:	1.95 — 1.975 GeV
E_beam:	5.754 GeV

Measurement data
ψ(p), [deg]	dσ/dψ(p), [μb/rad]	uncertainty	syst. uncert.	total uncert.
18.0	0.228	0.0254	0.06	0.0651
54.0	0.1872	0.0134	0.0449	0.0469
90.0	0.2058	0.0161	0.0469	0.0496
126.0	0.269	0.026	0.0572	0.0628
162.0	0.2361	0.0202	0.0525	0.0563
198.0	0.2572	0.02	0.0553	0.0588
234.0	0.2114	0.0158	0.0511	0.0535
270.0	0.2227	0.017	0.0486	0.0515
306.0	0.2059	0.0152	0.047	0.0494
342.0	0.2307	0.0228	0.0593	0.0636

CLAS Physics Database